Teams were given a piece of paper titled, "Math is Hard". It had several lines of words. The words, themselves, had little semantic meaning. Each word represented a letter and each line represented a word. Teams had to add the alphabet index value of each letter in a given word and then use the sum as an ascii value to get a letter. For example:

assets ewoks allergies

would be solved by adding:

assets: 1 + 19 + 19 + 5 + 20 + 19 = 83 (ascii letter "S")
ewoks: 5 + 23 + 15 + 11 + 19 = 73 (ascii letter "I")
allergies: 1 + 12 + 12 + 5 + 18 + 7 + 9 + 5 + 19 = 88 (ascii letter "X")

The final answer was seven two four four five two eight.

Teams called that phone number and were told to go to the drain pipe near the quarry at Limekiln trailhead in Lexington Reservoir.